Home / 15,175.96-20,930.95-9,872.47

Finding the Fourth Proportional to 15,175.96, 20,930.95 and 9,872.47

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Solution

The fourth proportional to 15,175.96, 20,930.95 and 9,872.47 is: 13,616.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.96 : 20,930.95 = 9,872.47 : x
  2. Step 2: Convert to fraction form
    15,175.96/20,930.95 = 9,872.47/x
  3. Step 3: Cross multiply
    15,175.96x = 20,930.95 × 9,872.47
  4. Step 4: Simplify right side
    15,175.96x = 206,640,175.95
  5. Step 5: Solve for x
    x = 206,640,175.95/15,175.96
  6. Step 6: Final answer
    x = 13,616.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.